With clients like Halle Berry and Jessica Chastain, Fiona Stiles is one of the top celebrity makeup artists out there. These are the 9 products she can't live without -- and you shouldn't either

If you don't follow any makeup artists on Twitter, you're missing out -- they're a great source for all sorts of tips and product news. One of our hands down favorites is celebrity makeup artist Fiona Stiles (@fionastiles). Her comments are informative and honest -- plus, she tweets with her famous clients about everything from eyeliner to "Game of Thrones." It's like eavesdropping on an insider gossip session.

In recent weeks, Stiles has been prepping Elizabeth Banks for her "What to Expect When You're Expecting" premieres and creating gorgeous editorial looks on it-girl du jour, Jessica Chastain. Need more to convince you of her awesomeness? How 'bout the fact that she's Halle Berry's go-to makeup artist? Thought that might seal the deal ...

Between photo shoots and appointments, the makeup guru found time to talk to us about her must-have products. In no particular order, these are the nine essentials she has on hand at all times. Whether you're a makeup pro, or you're building your makeup bag from the ground up, Stiles recommends these items be the cornerstone of your collection.

Stiles' favorites range from drugstore brands to high-end indulgences -- but, hey, if they can make Halle Berry look, well, like Halle Berry, we want to try them. Think you'll want more than nine products,to flesh out your kit? You can always follow Stiles on Twitter for even more celebrity makeup artist recommendations.

Seriously. $60 lip balm?! I use Blistex Silk 'n Shine for $4 and it works beautifully. I do see the Ecotools brush set in my local drugstore all the time and always wondered about them. I'll give them a try, since the price is more realistic for me. I'm also curious about the Anastasia brow gel. :)